Days
In the context of time, a day is a unit of time based on the rotation of the Earth. It is the period of time during which the Earth completes one full rotation on its axis. This rotation takes approximately 24 hours to complete, resulting in the familiar cycle of day and night.
A day is divided into 24 hours, each hour consisting of 60 minutes, and each minute consisting of 60 seconds.
Days are commonly used for organizing schedules, appointments, and activities. They are also used to measure durations of time, such as the number of days in a month or year.
[Days] Related Worksheets and Study Guides:
.◂Math Worksheets and Study Guides Third Grade. Adding Money
Study Guide
Adding Money 
Worksheet/Answer key
Adding Money Worksheet/Answer key
Adding Money Worksheet/Answer key
Adding Money Worksheet/Answer key
Adding Money
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The resources above cover the following skills:
Algebra (NCTM)
Use mathematical models to represent and understand quantitative relationships.
Model problem situations with objects and use representations such as graphs, tables, and equations to draw conclusions.